Rolex GMT-Master II “Batman” – Detailed Specifications

Case

• Material: Oystersteel (extremely resistant and highly polished steel alloy)

• Diameter: 40 mm

• Architecture: Monobloc middle case, screw-down case back, and winding crown

• Water Resistance: Waterproof up to 100 meters / 330 feet

• Winding Crown: Screw-down, Triplock triple waterproofness system

• Crystal: Scratch-resistant sapphire crystal with Cyclops lens over the date

Bezel

• Type: Bidirectional rotatable 24-hour graduated bezel

• Material: Two-color Cerachrom insert in blue and black ceramic

• Details: Moulded numerals and graduations for enhanced durability and legibility

Movement

• Calibre: Rolex Manufacture Calibre 3285

• Type: Perpetual, mechanical, self-winding with GMT function

• Precision: -2/+2 seconds per day (after casing)

• Functions:

  • Centre hour, minute, and seconds hands

  • 24-hour display

  • Second time zone with independent rapid-setting of the hour hand

  • Instantaneous date

  • Stop-seconds for precise time setting

• Oscillator:

  • Paramagnetic blue Parachrom hairspring

  • High-performance Paraflex shock absorbers

• Winding Mechanism: Bidirectional self-winding via Perpetual rotor

• Power Reserve: Approximately 70 hours

Dial

• Color: Black

• Display: Highly legible Chromalight display with long-lasting blue luminescence

Bracelet

• Type: Oyster bracelet (three-piece solid links)

• Material: Oystersteel

• Clasp: Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link